276

HYDRAULIC TIIRHINKK

TABLE 11.—TEST OF A 12-iNcu Pi-si/roN-DoitM-: TAN<WNTIAL WATNH

WlIIOEL UNDKU A ('ONSTANT PUMSSdltK Hl>',.U> <>!•' 305 FT.

Turns of needle
Head, ft.
Discharge, (ni. ft. per ace,
.R.p.m.
Bnikr loud, 11).
!
1 B.ii.p.
j KHi<uoii<'%\
P<T cent

1
305.1
"0.1025
0
18.0
0,00
oo.o

400
15.8
1.41
3<MJ

800
12.6
2 . 24
63 , 2

1000
10.8
2.41
67.7

1200
S . -t
2.21
63.2

1400
6.0
1.S7
52.7

1600
3.2
1.14
32 . 2

1800
0.4
0. 16
4.5

1920
0.0
0,00
o.o

2
305.2
0.1.85
0
35. (J
0.00
oo.o

400
30.8
2.7-1
42.7

8(K)
24.6
4,38
OS. 4

1000
21.0
'1.07
72.7

12(X)
17.5
4 . 07
72.7

1400
13.4
4. IK
65.1

1600
9.1
3,24
50.5

1800
4.4
1.76
27.4

2020
0.0
0.00
oo.o

3
305.5
0.278
0
52.8
0,00
oo.o

400
45.2
4.02
41,5

800
30 ! 6
0 . 52
67.4

1000
32.0
7. 12
73.7

1200
26.8
7.15
74.0

1400
20.7
6.- 15
66.8

1000
14.. 1
5.13
53.0

1800
7.8
3.12
32 . 2

2080
0.0
0,00 |
oo.o

4
305.7
0.341
0
62.8
0.00 |
oo.o

400
53.6
4 . 77
40 , 3

800
43.0
7 , 65
64.7

1000
38.4
8.55
72,2

1200
33.0
8 . 82
74.5

1400
26.0
8.10
68.4

1600
18,0
0 . 62
55.0

1800
10.0
4.00
33.0

2110
00.0
0.00
00.0